Heavy metal napthenate



Patented Sept. 6, 1932 ROBERT MARIA GERIJACH, F BERLIN-HALENSEE'GERMANY HEAVY METAL NAPTHENATE No Drawing. Application filed June 21, 1925, Serial No. 117,596, and in Germany October 13, 1924.

This invention refers broadly to a new class of pigments, lmpregnatlng and similar compounds, and it is intended to devise means of producing a more generally applicable class of compounds of the kind referred to than it was generally possible'to obtain by the processes heretofore in use. In the manufacture of pigments, staining, painting and impregnating compounds it is of importance to provide means for the dissolving of heavy metal salts in oils, in order to thereby increase their preserving, bactericide and fungicide action. In view of the fact that metal salts are not soluble in tar oils, mineral oils and fatty oils, as a general rule, solutions of such metal salts could be obtained heretofore almost exclusively by the assistance of soaps, by which means the metal salts were incorporated in the oils.

with this invention that free fatty acids as well as free naphthenic acids and abietinic acids are adapted to produce complex compounds with heavy metal salts which are soluble in oils, so that they are adapted to be dissolved in any proportions in tar oils, mineral oils, tar oils from lignite or browncoal, peattar-oils or fatty oils and the like, by proceeding for instance in the following manner:

EmampZes:-1. 100 parts by weight of American resin which is known to consists of about 7 5% abietic acid, are dissolved in 100 parts by weight of gas oil and are digested in a mixture with 3 by weight of copper-formiate, until a complete solution is obtained.

2. 100 parts byweight of naphthenie acid is heated with 6 parts by weight acetate of lead, until complete solution isobtained.

3. 100 parts by weight of oleic acid shaken up with a saturated aqueous solution of silico-fiuorate of copper and the resultant precipitate is separated from the remaining u aqueous liquid.

The complex compounds thus produced of the fatty acids, naphthenic acid, of the abietic acid and of the ferro-cyanie and ferri-cyanic acids may be used alone or in admixture with It has now been ascertained, in accordance oils, varnishes, j apans or pigments for painting or for impregnating purposes and for similar uses. I

Having thus described my invention and a number of exemplifications thereof it is pointed out that the invention is not restricted to these particular exemplifications and mode of operation, but it is susceptible of modifications and changes within the scopeand spirit of the invention as more particularly set forth and pointed out in the appended claims.

All metals belongingto the so-called sulphuretted hydrogen group are adapted to be used in connection with the present invention and the metals mentioned in the foregoing, namely, copper, lead and mercury, belong to that group. The expression metals of the sulphuretted hydrogen group comprises all metals which are precipitatable in an acid solution with sulphuretted hydrogen.

I claim i i 1. A process of manufacturing water-insoL ublc complex metal compounds, consisting in mixing 1-00 parts by weight of naphthenic acid with 6 parts by weight of acetate of lead at ordinary temperature and digesting the mixture until complete solution is obtained.

2. A process of manufacturing water-insoluble complex metal compounds, consisting in mixing naphthenic acid at ordinary temperature with acetate of lead and digesting the mixture until complete solution is ob tained.

3. A process of manufacturing water-insoluble complex metal compounds, consisting in mixing naphthenie acid at ordinary temperature with salts of metals of the second analytical group with Weak acids and digesting the mixture until complete solution is obtained. I

In testimony whereof I afiix my signature.

ROBERT MARIA GERLACH. 

